Well... in practical finite-but-very-large terms, it's really a matter of how much money you're willing to throw at it.

You can put up a lot of microwave transmitters, and so long as your receiver is designed to be able to pick out the sources - much like a camera can have more than one element registering 'red' - you can use the same frequency range for all of them.

As long as neither the receiver or transmitter are moving significantly, this isn't technologically impossible.

Unless they've figured out blockchain trimming, and how to vastly increase the transaction rate to traffic ratio, the blockchain simply isn't viable.

There's a reason all those 3rd party Bitcoin intermediaries popped up for 'off-chain' transactions (that solve all of Bitcoin's problems by removing Bitcoin from the equation).

While there may be some Bitcoin enthusiasts at IBM, it won't take very long for the rest of the organization to figure out the technology doesn't scale, isn't efficient, and has a short practical lifespan.

>I cannot fathom people who go to extreme lengths of diet and exercise in a futile effort to prolong their lives. No one lives forever. You will die, no matter what you do to put it off. Why would you want to exist in suffering for extra years instead of just accepting your exit gracefully while you're still a fully functioning human being?

I've known people who lived well, well into their 90s before a quick decline. The retirement home was a very brief stop for them, because when they went in it was because their bodies were already failing.

With good genes, a good environment, and taking care of yourself, you can have a couple of decades of life and experience beyond 70.

You only get one go... why waste any of it? Rotting in a retirement home is generally a default choice by people who don't know what to do with themselves without someone telling them first.

With electric elevators riding vertical rails, you can do switching. Essentially, with three or four sets of rails (one up, one down, a couple for parking) you can put as many cars in the same set of shafts as you want - and even have a supply of extras waiting in a subbasement to be added when required.

Ideally, you're going to want a couple of low-end laptops of a make and model known for reliability and able to run directly off wall current. You keep those backups for 20 years and you might find there's no OS or hardware that can handle your old media.

THEN I'd tend to store the data (and an image of the OS drive) on bootable USB flash-based storage. Just in case. You don't need the mechanical parts of the HDD failing after a long period in storage.

>a virtual currency that is in direct competition with its own pet, the Almighty Dollar.

This is what Bitcoin proponents would have you believe, but there is no competition at present, and the flaws inherent in the protocol mean there never will be.

Perhaps some other future crypto will be a competitor, but all Bitcoin does is spawn scams or payment gateways that evolve into PayPal equivalents (once they're big enough they cut Bitcoin out of the loop).